# Efficacy-safety Study of Sublingual Immunotherapy With Depigmented-polymerized Pollen Extracts to Treat Rhinoconjunctivitis

> **NCT00550875** · PHASE2 · COMPLETED · sponsor: **Laboratorios Leti, S.L.** · enrollment: 90 (estimated)

## Conditions studied

- Allergic Rhinoconjunctivitis

## Interventions

- **BIOLOGICAL:** Grass pollen allergenic extract (L. perenne-C. dactylon )
- **BIOLOGICAL:** Grass pollen allergenic extract (L. perenne-C. dactylon )
- **BIOLOGICAL:** placebo

## Key facts

- **NCT ID:** NCT00550875
- **Lead sponsor:** Laboratorios Leti, S.L.
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2007-06
- **Primary completion:** 2009-12
- **Final completion:** 2009-12
- **Target enrollment:** 90 (ESTIMATED)
- **Last updated:** 2011-07-13


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00550875

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00550875, "Efficacy-safety Study of Sublingual Immunotherapy With Depigmented-polymerized Pollen Extracts to Treat Rhinoconjunctivitis". Retrieved via AI Analytics 2026-05-26 from https://api.ai-analytics.org/clinical/NCT00550875. Licensed CC0.

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